% Physical functions.
%
%    This folder contains basic physical function needed for
%    remote sensing applications.
%
%    Also the physical constants are stored in this folder
%    (constants.m).
%
%    There are also functions to calculate the equilibrium water vapor
%    pressure over a plane surface of liquid water or ice according to
%    Sonntag, 1994: e_eq_water.m and e_eq_ice.m.